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69 lines
1.8 KiB
ArmAsm
69 lines
1.8 KiB
ArmAsm
/* Copyright (C) 1995, 96, 97, 98, 99, 2000, 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include "kernel-features.h"
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#include <asm/errno.h>
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/* Rather than dragging in yet another kernel file, <asm/page.h>, we
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define it here. Provide for easy override. */
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#ifndef PAGE_SHIFT
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#define PAGE_SHIFT 13
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#endif
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.syntax no_register_prefix
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/* This is __ptr_t
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__mmap (__ptr_t addr, size_t len, int prot, int flags, int fd, off_t offset) */
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ENTRY (__mmap)
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/* Only accept a offset (and address) being a multiple of PAGE_SIZE,
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since we only pass the page part in the system call. */
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move.d [sp+4],r9
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btstq (PAGE_SHIFT - 1),r9
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bne 1f
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btstq (PAGE_SHIFT - 1),r10
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bne 1f
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lsrq PAGE_SHIFT,r9
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move [sp],mof
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move srp,[sp]
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move r9,srp
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movu.b SYS_ify (mmap2),r9
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break 13
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cmps.w -4096,r10
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bhs 0f
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move [sp],srp
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Ret
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nop
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/* Local error handler. */
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1:
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movs.w -EINVAL,r10
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/* Drop through into the ordinary error handler. */
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PSEUDO_END (__mmap)
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weak_alias (__mmap, mmap)
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